Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 4805883 | Box spring assembly with a grid structure formed of both basic and spring wire A box spring assembly consisting of a generally horizontal frame and a generally horizontal wire grid disposed a predetermined distance above the frame, and a plurality of grid support springs arranged between and secured to the grid and the frame so as t... | 02/21/1989 |
